Enamel-baking oven.



G. l. MORRISS.

ENAMEL BIAKING OVEN. APPLICATION FILED mm1. 191e.

Patented Oct. '31, 1916.

`citizen of the l UMTED STATES GRAY I. MORRISS, OF'CHICAGO, ILLINOIS, ASSIGNOR TO RELIANCE DRYING ROOM CO., y l

PATEN T OFFICE.

OF' CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

ENAMEL-BARING OVEN.

Specification of Letters Patent.

Application nled March 7,191.6. Serial No. 82,550

Be it known that I, Guay I. Moinirss, a

lnited States, residing at vChicago, county of Cook, and State Illinois, have invented certain new and useful Im provenients in Enamel-Baking Ovens, of which the following 'is a specification.

This invention relates primarily to a baking oven employing a heater of special form and peculiarly adapted to supply a high degreeof heat to the drying or baking chainher wdithout commin'gling any of the products ofcoinbustioii with the air intended for drying and baking purposes, and without permitting the ingress of fumes of a possi ble combustive nature to the space inclosing the Haine jets.

he invention further relates to the means providedl for increasing the radiating surface available in a somewhatrestricted space and to the details'of construction and combinations of parts :hereinafter described andl claimed.

In the drawings: Figure 1 is a plan view of an enamel baking room embodying the heating .features of the present invention; Fig. 2 isy asectional view taken on line of Fig. detail-of a section 0f the radiating wall of the heater.

lYyr Turposes of is show-i applied to exterior double walls 4-4 set in right :ingled relation to .one another.v which walls connect with inward extensiftns 5+5, wiich latter terminate in alinenielnt with the periphery of ay turn-table 6 having partition 7 so arranged as to be turned into register with the ends of the walls 5 to serve as a door for closing the structure.

The enamel baking room is provided with a. polygonal partition wall or screen 8, a portion ofwhich is shown in Fig. 2, and which affords space at the top and bottom lor the down circulation of air. This partition divides the structure into a, baking chamber 9 and a heating chamber 10.

The foregoing featuresI are described inainlyfor purposes of illustration,- lsince the heating io be described, may be utilized in conneclion with other convenient forms of drying illustration, the heater rooms. either with or without the turn# 1- and Fig. 3 is an enlarfred' Y `f h a baking room having s a 'cross features of the invention, now' ratented oct. 31, 191e.

tively narrow in comparison with its lengthl and height, andfi'i'i 'order to -secure 'the high degree of temperature necessary for enamel baking purposes, a gas heating appliance is employed which comprises one orfniore gas supply pipes l1, which desire be provided with .branch header, pipes 12, as shown in the upper left hand corner of Fig. l, in which th given angular formation in order to accommodate it to the. space afforded in the heat`r ing chamber. The gas pipes or the branch pipes. as the case may be, are provided with a series of burner tips or'nozzlelsll, which are pointed inwardly and positioned to direct the iets ot llame directly against' e heater is,

6 latter may, if l corrugated metal wall: H which' isy formed to atlord a multiplicity of hollow bumps orprotuberanees l5 preferably arrangedin staggered relation to one another, and designed to afford a very considerable excess,

of Yradiating surface as compared with the amount atl'orded by a plain flat plate. The corrugated heater wall preferably extends from a point at or immediately adjacent the floor Lf the heating chamber, to a point about midway the height The burner space at the top isiuclosed by an inturned wall 16. through which are entered \v'enti.latin,fr fines 17 adapted to'pro- 'vide for the escape ofthe products of combustion prevent these' products from cominingling with fumes given oll' by the enamel or similar substance which, if perinitted,' might 4produce a deleterious effect upon the enamel.

s shown in Fig. l, the end heaters are of straight rather than angular formation, l but it is obviousithiit the -heater cali be given a configuration in each case best adapted for use in connection with the wall for which it is intended.

In order to better provide for thecirculation of air, a series of updral'i (lues ,1R aro 100` updraft flues will lie heated toa considerable,

degree. thereby. iii somo measure. facilitating the updraft ofthe air. which may he further increased and employment of a fan 19 above the rool of.

the baking chaiiibei-,w-ind adapted to dis-- accelerated hv (he.

of the chamber. l

`als

charge the air downwardly thereinto. This arrangement of the fan not only serves to facilitate the withdrawal of air from a point near the floor, but also tends to maintain currents of air circulating among and over the partition wall S in such a manner as to bring these circulating currents of air into continuous contact with the highly heated surfaces of the gas heateis, so that a very high degree of temperature may be maintained which is essential in the drying and baking of enamel.

In use, where a turn-table is employed, the articles to be dried and baked are stacked up on one side of the turn-table, after which the latter is turned around to reverse position which brings the charge of enamel-ware within the baking chamber, after which the gas jets can be lighted andthe baking operation proceeded. By operating the, fan, currents of air will be constantly withdrawn from the space beneath the partition and ad-l mitted from above, which maintains the constant circulation of air both inside and outside through tlie baking chamber, and at the sanie time a very large percentage of the air, passing downwardly through the baking chamber, will be brought into direct contact with the highly heated walls of the heater, and directed upwardly without passing through the updraft flues, thereby maintaining an inner circulation through the heating chamber. Of course, the amount of air withdrawn through the updraft ues may be regulated by increasing or'diminishing the speed of the fan, or, if desired, other means may be employed for securing a like result.

The present invention relates primarily to the heating features, and the means for inducing and maintaining a proper circulation of the air currents can' be changed or modified, and the form, shape and arrangement of the heating and baking chambers can be modified without departing from the spirit of the invention.

I claim:

1. In a structure of the class described, an outer inclosing wall, a roof, and an inner partition wall dividing the structure into a eating chamber and a bakin chamber, a heater in the heating chamber E closed burner space and employing a radiating wall of uneven formation, and a gas nozzle positioned behind the radiating wall and closed oi from the lieatin chamber and in position to discharge a jet o ame against the rear or unex sed face of theradiating wall, substantially) as described.

2. In a structure of the class described, an outer inclosing wall, a roof, and an inner partition wall dividing the structure into a eating chamber and a baking chamber, a heater in the heating chambery comprising a radiating Wall located in spaced relation with respect to the outer wall of the heating chamber and furnishing in conjunction therewith an inclosed burner space, and a series of gas nozzles located in position to direct jets of fiame against the inner surface of the radiating wall for the purpose of heating the same.

3. In a structure of the class described, an outer inclosing wall, a roof, and an inneraitition wall dividing the structure into a lieating chamber and a baking chamber, a heater in the heating chamber comprising a radiating wall located in spaced relation with respect to the outer wall of the heating chamber and furnishing in conjunction therewith an inclosed burner space, a series of gas nozzles located in position to direct jets of iaine against the inner surface ofthe radiating wall for the purpose of heating the same, and ventilating fines extending upwardly from the burner space and through the heating chamber for dischar ing the products of combustion, substantiay as described.

4. In a structure of the class described, an outer inclosing wall, a roof, and an inner partition wall dividing the structure into a eating chamber and a baking chamber, a. heater in the heating chambercomprising a radiating Wall located in spaced." relation with respect to the outer wall of the heating chamber and furnishing in conjunction therewith an inclosed burner space, a series of gas nozzles located in position to direct jets of flame a ainst the irmer surface of the radiating wal for the purpose of heating the saine, updraft iues passing through the heater and through the radiating wall near the Hoor level and extending upwardly outside of'aid wall and returning to the baking chainburnear the to thereof, and means for inducing currents 0 air through the updraft fines and projecting1 said currents down'- wardly into the ba -ng chamber, substantially as described.

5. In a structure of the class'described, an outer inclosing wall, a roof,and an'inner partition wall dividing the structure into a eating chamber and a baking chamber, a heater in the heating chamber comprising a radiating wall located in spaced y relation A with respect to the outer wall of the heating chamber and furnishing in conjunction therewith an inclosed burner space, a series I of gas nozzles located in position to direct jets of flame against the inner surface of the radiating wall for the urpose of heating the same, Ventilating ues extending upwardly from'the burner space and throu h the heating chamber for discharging t e products of combustion, updraft filles paing through the heater and through the radiating Wall near the floor level, and .extending upwardly outside of nid wall and returning to the baking chamber naar the 13 the baking chamber, substantially as de- 6. In a structure of the class described, the combination of inclosing walls, a roof, and a partition Vwall dividing the space within the structure into a heating chamber and baking chamber in communication with one another, and a' heater in the heating chamber con- I -sisting of a radiating wall ,in spaced relation with the outer inclosing wall and forming an inclosed burner spaced in conjunction therewith, and gas nozzles positioned todi` rect Jets of Haine against the radial avg.. will l substantially as described.

7; In a structure of the class described, the combination of inclosing walls, a roof, and a partition i'all dividing the spacewitliin -the structure into a heatingr chamber and baking chamber in communication with one another, and a heater in the heating chamber consisting of a radiating wall of .irregular surface contour in spaced relation with the outer inclosing wall and forming an inclosed burner spaced in conjunction therewith, andA gas nozzles positioned to direct jets of flame against the radiating wall, substantially as described.

8, In a structure of the class described, the combination of inclosiiig walls, a roof, and a partition wall dividing the space within the structure into a heating chamber and baking` chamber in communication with one another, and a heater in the heating chamber consisting of a radiating wall of irregular surface contour in spaced relation with ythe outer inclosiiig wall and forming an inclosed burner spaced in conjunction therewith, and gas noziles located within the burner space, substantially as described.

GRAY I. MORRISS.

Witnesses FRANCES M. FRos'r, SAMUEL lV. BANNiNG. 

